Add pop_back() to GrAllocator and add unit test.

Add pop_back() to GrAllocator and add unit test.

BUG=skia:2889
Committed: https://skia.googlesource.com/skia/+/a1ae66d252edf6da932caed1fe43d11216e56c0e

[bsalomon, 2014-09-04 22:12:11]

bsalomon@google.com changed reviewers:
+ robertphillips@google.com

[bsalomon, 2014-09-04 22:12:11]

Split out from larger CL.

[robertphillips, 2014-09-05 12:31:22]

lgtm + a suggestion, typo & question.

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cpp
File tests/GrAllocatorTest.cpp (right):

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:21: 
gCount -> gNumInstances, gNumAlloced ?

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:72: 
statck -> stack ?

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:86: allocators.push_back(&sa3);
Did you intend this to be GrSTAllocator<4 ?

[bsalomon, 2014-09-05 13:04:22]

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cpp
File tests/GrAllocatorTest.cpp (right):

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:21: 
On 2014/09/05 12:31:22, robertphillips wrote:
> gCount -> gNumInstances, gNumAlloced ?

Done.

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:21: 
On 2014/09/05 12:31:22, robertphillips wrote:
> gCount -> gNumInstances, gNumAlloced ?

Done.

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:72: 
On 2014/09/05 12:31:22, robertphillips wrote:
> statck -> stack ?

Done.

https://codereview.chromium.org/538183002/diff/40001/tests/GrAllocatorTest.cp...
tests/GrAllocatorTest.cpp:86: allocators.push_back(&sa3);
On 2014/09/05 12:31:22, robertphillips wrote:
> Did you intend this to be GrSTAllocator<4 ?

Done.

[bsalomon, 2014-09-05 13:06:18]

The CQ bit was checked by bsalomon@google.com

[commit-bot: I haz the power, 2014-09-05 13:06:39]

CQ is trying da patch. Follow status at
 https://skia-tree-status.appspot.com/cq/bsalomon@google.com/538183002/60001

[commit-bot: I haz the power, 2014-09-05 13:13:47]

Committed patchset #4 (id:60001) as a1ae66d252edf6da932caed1fe43d11216e56c0e